The check-up is done, and on the lab sheet there is a value that is too high: cholesterol. The advice that usually follows is "eat less fatty food and move more" — only in that sweeping form it does not help much. This article sets out what cholesterol does in the body, what LDL and HDL mean, what role the cholesterol on your plate really plays and which measures are considered effective in update Akademie's course material. Important first: blood lipid values belong in medical assessment. What is written here replaces neither diagnosis nor therapy.
What cholesterol does in the body
Cholesterol is not a foreign substance to be shut out. It serves as a building material for cell walls, the nervous system and certain hormones, and when there is enough sunlight on the skin, vitamin D is formed from it. The body can produce cholesterol itself — it does not depend on us eating it. So it is never about getting rid of cholesterol, but about bringing its transport in the blood into a favourable ratio.
LDL and HDL are transporters, not types of cholesterol
Fats are not water-soluble. So that they can travel in the blood, they are packed together with cholesterol into a shell of proteins — these are the lipoproteins. LDL stands for a lipoprotein of low density, HDL for one of high density. In the course material, HDL is described as the transport protein that protects against arteriosclerosis; a shift towards more LDL and less HDL is considered an unfavourable pattern. So there is no "good" and "bad" cholesterol, but two directions of transport. A single value also says little — what is assessed is the overall picture, including blood pressure, blood sugar, waist circumference, smoking status and family history.
Why elevated values matter at all: arteriosclerosis
The reason blood lipids are measured is called arteriosclerosis. The arterial vessel walls change degeneratively: they lose elasticity, the vessels narrow — and all of this unnoticed over years. Narrowed vessels raise blood pressure and the risk that a blood clot closes them completely — with a heart attack or stroke as the consequence. The course material distinguishes risk factors that cannot be influenced — age and sex (men from 50, women from 60) as well as hereditary predisposition — from those that can: lack of exercise, elevated blood lipid values, smoking, high blood pressure, diabetes and excess weight. It is precisely through these that the prognosis is considered treatable. How the deposits form is explored in more depth in the article Understanding arteriosclerosis.
Dietary cholesterol: the smaller lever
For decades the egg was the prime suspect — that view is outdated. The course material puts it soberly: according to current knowledge, the influence of dietary cholesterol on blood lipids and blood cholesterol is assessed as not very strong. Too high an intake of saturated and of trans fatty acids has a far greater negative influence. So anyone wanting to improve their values does not look at the eggs but at fat quality. How the blanket fear of fat arose is shown in the article Where does the fear of fat come from?.
Fat quality makes the difference
Saturated fatty acids
They are found above all in fatty meat and sausage products, butter, dairy products, coconut and palm kernel fat. With increased intake, blood lipid values worsen and the risk of vascular disease and type 2 diabetes rises. Not a prohibition, but a question of quantity.
Trans fatty acids
They are the clearest problem case: they strongly raise LDL cholesterol, are considered arteriosclerotically active and increase the risk of cardiovascular disease. According to the course material, synthetically produced trans fatty acids have an even greater negative potential than saturated fatty acids. They are formed industrially by the partial hydrogenation of oils and by heating fats repeatedly, for instance when deep-frying; legally, at most 2 g per 100 g of vegetable cooking oil is permitted.
Unsaturated fatty acids
You take in monounsaturated fatty acids through olive oil, rapeseed oil, avocados, hazelnuts and almonds. Essential — meaning the body cannot produce them itself — are linoleic acid and alpha-linolenic acid from rapeseed oil, linseed oil, walnuts and chia seeds as well as EPA and DHA from oily fish or algae; more on this in the article on omega-3 fatty acids. A key sentence from the course: fats cannot be judged by their origin — animal does not mean unhealthy, plant-based does not mean healthy. What is decisive is the fatty acid composition. And fat is part of the picture: about 1 g per kg of body mass per day, and 1 to 3 g per kg for physically active people.
Dietary fibre: the underestimated lever
Here lies the most direct dietary effect on cholesterol levels — and it is regularly overlooked. Soluble dietary fibres such as pectin and guar, contained in fruit, vegetables and especially in oats, bind bile acids in the large intestine, which are then excreted. To form new bile acids, the body uses up cholesterol — and consequently the level in the blood falls. In addition, bacterial breakdown produces cleavage products that inhibit cholesterol synthesis in the liver. Around 30 g per day is recommended; the average lies clearly below that. It can be reached with about 350 g of wholegrain bread — or with one to two pieces of fruit (with the skin where possible), around 75 g of salad and about 200 g of vegetables.
Which dietary pattern performs best
The course material is unusually clear here. In people with excess weight, a Mediterranean diet with calorie restriction as well as a low-carbohydrate diet are superior to a low-fat diet. The effects on metabolic parameters — expressly cholesterol values, blood lipid profile and blood sugar control — were more pronounced with both than with the low-fat variant. In the long term the calorie-reduced Mediterranean diet performed best, because after the low-carb phase weight was regained more often. Fat-reduced approaches brought neither an advantage in weight reduction nor demonstrable positive effects on the development of chronic diseases.
As the two best-researched concepts for cardiovascular disease, the course names the DASH diet and the Mediterranean diet — with a DASH variant containing fewer carbohydrates and more plant fats showing the better cardiometabolic values. What this looks like in everyday life is described in the articles on nutrition for a strong heart, on LOGI nutrition and on anti-inflammatory foods. A note on dealing with headlines: the training uses the title "These 7 cheeses lower your cholesterol level" of all things as a teaching example of how claims without sources come about.
What training contributes
Endurance sport reduces blood lipid values and cholesterol levels — that is what the fundamentals of the training say. The effective range is not a hard pace but base endurance at around 65 to 75 percent of maximum heart rate, from about 20 minutes onwards and purely aerobic; it produces the peripheral adaptations in capillaries and mitochondria. The article on base endurance explains why this unspectacular range achieves so much. For arteriosclerosis, the course material recommends both: endurance training (including in interval form) and strength training, the latter without breath-holding pressure. That is particularly relevant when elevated blood pressure is present as well — often the case with elevated blood lipids.
Where nutrition and training reach their limits
Honesty is part of this: age, sex and hereditary predisposition remain as they are. There are forms of elevated cholesterol values that are strongly genetically determined — with these, lifestyle shifts the values but does not cancel out the predisposition. Whether and when drug treatment belongs alongside is a medical decision based on overall risk, not on a single laboratory value. Medication does not replace nutrition and training in this — both remain part of the treatment. For coaches a clear limit applies: advising yes, therapy or stopping medication never.
Course tip from update Akademie: If you want to understand how fatty acids, dietary fibre and dietary patterns fit together — and how to convey that comprehensibly in a consultation — you will find the right foundation in the Ernährungscoach programme at update Akademie: nutrient science, energy balance, dietary patterns in comparison and evidence-based practice, that is, the ability to check headlines yourself.
Frequently asked questions about cholesterol
Do I have to give up eggs?
According to current knowledge, the influence of dietary cholesterol on blood values is assessed as not very strong. More relevant is the amount of saturated and trans fatty acids. Blanket avoidance of eggs is therefore not the most obvious measure.
What lowers cholesterol levels most reliably?
Three levers: more soluble dietary fibre, towards 30 g per day, a shift in fat quality away from trans fatty acids and towards unsaturated ones, and regular endurance training. Whether that is enough in an individual case is shown by medical follow-up.
Is a high value automatically dangerous?
No. What is assessed is the overall risk from several factors — blood pressure, blood sugar, smoking, excess weight, lack of exercise and family history. A single laboratory value cannot be interpreted meaningfully without this context.
How much exercise does it take?
Effective is endurance training at about 65 to 75 percent of maximum heart rate with sessions from around 20 minutes, supplemented by strength training without breath-holding pressure. What is decisive is regularity over months, not the single hard session.
Is a low-fat diet the best choice?
The course material sees it differently: a calorie-reduced Mediterranean diet and a low-carbohydrate diet performed better on weight and blood lipid profile than low-fat diets. It is not the amount of fat that decides, but fat quality.
Conclusion
Elevated cholesterol is not a verdict but an indication. The body needs cholesterol for cell walls, the nervous system, hormones and vitamin D — what becomes problematic is the transport pattern in interplay with other risk factors. The most effective lever lies not with the cholesterol on your plate but with fat quality, with enough dietary fibre, with a diet oriented towards the Mediterranean pattern or reduced carbohydrates, and with regular training. What is enough in your case is something you clarify with your doctor — on the basis of a follow-up value after some months rather than a snapshot.
